Radiator efficiency, is measured in British Thermal Units (BTU). The dimensions of a room are used to calculate the BTU output required to heat that room. Radiators all have a known and calculated BTU output. Using the BTU outputs in the Product Specification or description above, it is easy to calculate the size of radiator you need to help provide the total heat output necessary for your room.

How to calculate BTU requirement

The best way is to ask your plumber to perform the calculation for you. If you don't have access to a plumber, you can use the BTU Calculator below as a guide. Please note that the calculated figure relates to the combined heat output of all radiators in the room, therefore the towel rail or radiator that you purchase need not satisfy the entire BTU output if it is used to complement existing radiators.

This calculator is for guidance use only.

1. Please select your required units

Metric (metres)

Imperial (feet)

2. Please enter room measurements

Height of room:

Width of room:

Length of room:

Window Area x²:

3. Please select type of room:

4. What is below the room?

5. What is above the room?

6. Please select type of outside walls:

7. Please select type of windows:

8. Please select number of outside walls:

Watt/BTU requirements:

Watts Required:

BTU's Required:

Essential Extras Available (will be displayed when product added to basket)

Revamp any room in your home with the Milano Aruba 236 x 1600mm horizontal designer radiator. Constructed from mild steel to ensure long lasting durability, this stylish designer radiator features a white finish and oval tubes and is suitable for use with any central heating system to ensure your room is quickly transformed into a warm and inviting space.

236mm x 1600mm x 78mm

1,963 BTU's (575 Watts)

High Quality White Powder Coated Finish

Features 4 Horizontal single Panels

15 Years Guarantee

Built to Last: 1.5mm Thick Steel for Guaranteed Quality

Tested and Certified BS EN 442 Standards

ISO9001:2008 Registered Manufacturer

CE Marked

Includes Wall fixings, Wall plugs, Blanking and Bleed plug

Please Note: This product will arrive marked as a vertical installation and horizontal mounting brackets will be supplied separately.